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[X86][NFC] Moved/Updated llvm.set.rounding testcases #155434

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JaydeepChauhan14
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@JaydeepChauhan14 JaydeepChauhan14 commented Aug 26, 2025 •
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  • Moved llvm.set.rounding testcases from llvm/test/CodeGen/X86/fpenv.ll to llvm/test/CodeGen/X86/isel-llvm.set.rounding.ll.
  • Added GlobalIsel RUNs as precommit test and will add llvm.set.rounding GISEL implementation PR after this merge.

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llvmbot commented Aug 26, 2025

@llvm/pr-subscribers-backend-x86

Author: None (JaydeepChauhan14)

Changes
  • Moved llvm.set.rounding testcases from llvm/test/CodeGen/X86/fpenv.ll to llvm/test/CodeGen/X86/llvm.set.rounding.ll.
  • Added GlobalIsel RUNs too.

Full diff: https://github.com/llvm/llvm-project/pull/155434.diff

2 Files Affected:

  • (modified) llvm/test/CodeGen/X86/fpenv.ll (-238)
  • (added) llvm/test/CodeGen/X86/llvm.set.rounding.ll (+256)
diff --git a/llvm/test/CodeGen/X86/fpenv.ll b/llvm/test/CodeGen/X86/fpenv.ll
index c79e19f07cda5..77eaaa1ca08db 100644
--- a/llvm/test/CodeGen/X86/fpenv.ll
+++ b/llvm/test/CodeGen/X86/fpenv.ll
@@ -11,244 +11,6 @@ declare i32 @llvm.get.fpmode.i32()
 declare void @llvm.set.fpmode.i32(i32 %fpmode)
 declare void @llvm.reset.fpmode()
 
-define void @func_01() nounwind {
-; X86-NOSSE-LABEL: func_01:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    orb $12, {{[0-9]+}}(%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_01:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    orb $12, {{[0-9]+}}(%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    orb $96, {{[0-9]+}}(%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_01:
-; X64:       # %bb.0:
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    orb $12, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    orb $96, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 0)  ; TowardZero (CW[11-10] = 11)
-  ret void
-}
-
-define void @func_02() nounwind {
-; X86-NOSSE-LABEL: func_02:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    andb $-13, {{[0-9]+}}(%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_02:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    andb $-13, {{[0-9]+}}(%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    andb $-97, {{[0-9]+}}(%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_02:
-; X64:       # %bb.0:
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    andb $-13, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    andb $-97, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 1)  ; ToNearestTiesToEven (CW[11-10] = 00)
-  ret void
-}
-
-define void @func_03() nounwind {
-; X86-NOSSE-LABEL: func_03:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X86-NOSSE-NEXT:    andl (%esp), %eax
-; X86-NOSSE-NEXT:    orl $2048, %eax # imm = 0x800
-; X86-NOSSE-NEXT:    movw %ax, (%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_03:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X86-SSE-NEXT:    andl (%esp), %eax
-; X86-SSE-NEXT:    orl $2048, %eax # imm = 0x800
-; X86-SSE-NEXT:    movw %ax, (%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    movl $-24577, %eax # imm = 0x9FFF
-; X86-SSE-NEXT:    andl (%esp), %eax
-; X86-SSE-NEXT:    orl $16384, %eax # imm = 0x4000
-; X86-SSE-NEXT:    movl %eax, (%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_03:
-; X64:       # %bb.0:
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    orl $2048, %eax # imm = 0x800
-; X64-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-24577, %eax # imm = 0x9FFF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    orl $16384, %eax # imm = 0x4000
-; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 2)  ; Upward (CW[11-10] = 10)
-  ret void
-}
-
-define void @func_04() nounwind {
-; X86-NOSSE-LABEL: func_04:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X86-NOSSE-NEXT:    andl (%esp), %eax
-; X86-NOSSE-NEXT:    orl $1024, %eax # imm = 0x400
-; X86-NOSSE-NEXT:    movw %ax, (%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_04:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X86-SSE-NEXT:    andl (%esp), %eax
-; X86-SSE-NEXT:    orl $1024, %eax # imm = 0x400
-; X86-SSE-NEXT:    movw %ax, (%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    movl $-24577, %eax # imm = 0x9FFF
-; X86-SSE-NEXT:    andl (%esp), %eax
-; X86-SSE-NEXT:    orl $8192, %eax # imm = 0x2000
-; X86-SSE-NEXT:    movl %eax, (%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_04:
-; X64:       # %bb.0:
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    orl $1024, %eax # imm = 0x400
-; X64-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-24577, %eax # imm = 0x9FFF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    orl $8192, %eax # imm = 0x2000
-; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 3)  ; Downward (CW[11-10] = 01)
-  ret void
-}
-
-define void @func_05(i32 %x) nounwind {
-; X86-NOSSE-LABEL: func_05:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X86-NOSSE-NEXT:    leal 4(%eax,%eax), %ecx
-; X86-NOSSE-NEXT:    movl $201, %eax
-; X86-NOSSE-NEXT:    # kill: def $cl killed $cl killed $ecx
-; X86-NOSSE-NEXT:    shll %cl, %eax
-; X86-NOSSE-NEXT:    andl $3072, %eax # imm = 0xC00
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
-; X86-NOSSE-NEXT:    andl (%esp), %ecx
-; X86-NOSSE-NEXT:    orl %eax, %ecx
-; X86-NOSSE-NEXT:    movw %cx, (%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_05:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X86-SSE-NEXT:    leal 4(%eax,%eax), %ecx
-; X86-SSE-NEXT:    movl $201, %eax
-; X86-SSE-NEXT:    # kill: def $cl killed $cl killed $ecx
-; X86-SSE-NEXT:    shll %cl, %eax
-; X86-SSE-NEXT:    andl $3072, %eax # imm = 0xC00
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
-; X86-SSE-NEXT:    andl (%esp), %ecx
-; X86-SSE-NEXT:    orl %eax, %ecx
-; X86-SSE-NEXT:    movw %cx, (%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    movl $-24577, %ecx # imm = 0x9FFF
-; X86-SSE-NEXT:    andl (%esp), %ecx
-; X86-SSE-NEXT:    leal (%ecx,%eax,8), %eax
-; X86-SSE-NEXT:    movl %eax, (%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_05:
-; X64:       # %bb.0:
-; X64-NEXT:    # kill: def $edi killed $edi def $rdi
-; X64-NEXT:    leal 4(%rdi,%rdi), %ecx
-; X64-NEXT:    movl $201, %eax
-; X64-NEXT:    # kill: def $cl killed $cl killed $ecx
-; X64-NEXT:    shll %cl, %eax
-; X64-NEXT:    andl $3072, %eax # imm = 0xC00
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %ecx
-; X64-NEXT:    orl %eax, %ecx
-; X64-NEXT:    movw %cx, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-24577, %ecx # imm = 0x9FFF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %ecx
-; X64-NEXT:    leal (%rcx,%rax,8), %eax
-; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 %x)  ; Downward
-  ret void
-}
-
 define void @get_fpenv_01(ptr %ptr) #0 {
 ; X86-NOSSE-LABEL: get_fpenv_01:
 ; X86-NOSSE:       # %bb.0: # %entry
diff --git a/llvm/test/CodeGen/X86/llvm.set.rounding.ll b/llvm/test/CodeGen/X86/llvm.set.rounding.ll
new file mode 100644
index 0000000000000..07e11393ab83d
--- /dev/null
+++ b/llvm/test/CodeGen/X86/llvm.set.rounding.ll
@@ -0,0 +1,256 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=-sse -verify-machineinstrs < %s | FileCheck %s -check-prefixes=NOSSE,SDAG-X86-NOSSE
+; RUN: llc -mtriple=i686-unknown-linux-gnu -global-isel=1 -global-isel-abort=2 -mattr=-sse -verify-machineinstrs < %s | FileCheck %s -check-prefixes=NOSSE,GISEL-X86-NOSSE
+; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=+sse -verify-machineinstrs < %s | FileCheck %s -check-prefixes=X86-SSE,SDAG-X86-SSE
+; RUN: llc -mtriple=i686-unknown-linux-gnu -global-isel=1 -global-isel-abort=2 -mattr=+sse -verify-machineinstrs < %s | FileCheck %s -check-prefixes=X86-SSE,GISEL-X86-SSE
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -verify-machineinstrs < %s | FileCheck %s -check-prefixes=X64,SDAG-X64
+; RUN: llc -mtriple=x86_64-unknown-linux-gnu -global-isel=1 -global-isel-abort=2 -verify-machineinstrs < %s | FileCheck %s -check-prefixes=X64,GISEL-X64
+
+declare void @llvm.set.rounding(i32 %x)
+
+define void @func_01() nounwind {
+; NOSSE-LABEL: func_01:
+; NOSSE:       # %bb.0:
+; NOSSE-NEXT:    pushl %eax
+; NOSSE-NEXT:    fnstcw (%esp)
+; NOSSE-NEXT:    orb $12, {{[0-9]+}}(%esp)
+; NOSSE-NEXT:    fldcw (%esp)
+; NOSSE-NEXT:    popl %eax
+; NOSSE-NEXT:    retl
+;
+; X86-SSE-LABEL: func_01:
+; X86-SSE:       # %bb.0:
+; X86-SSE-NEXT:    pushl %eax
+; X86-SSE-NEXT:    fnstcw (%esp)
+; X86-SSE-NEXT:    orb $12, {{[0-9]+}}(%esp)
+; X86-SSE-NEXT:    fldcw (%esp)
+; X86-SSE-NEXT:    stmxcsr (%esp)
+; X86-SSE-NEXT:    orb $96, {{[0-9]+}}(%esp)
+; X86-SSE-NEXT:    ldmxcsr (%esp)
+; X86-SSE-NEXT:    popl %eax
+; X86-SSE-NEXT:    retl
+;
+; X64-LABEL: func_01:
+; X64:       # %bb.0:
+; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    orb $12, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    orb $96, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    retq
+  call void @llvm.set.rounding(i32 0)  ; TowardZero (CW[11-10] = 11)
+  ret void
+}
+
+define void @func_02() nounwind {
+; NOSSE-LABEL: func_02:
+; NOSSE:       # %bb.0:
+; NOSSE-NEXT:    pushl %eax
+; NOSSE-NEXT:    fnstcw (%esp)
+; NOSSE-NEXT:    andb $-13, {{[0-9]+}}(%esp)
+; NOSSE-NEXT:    fldcw (%esp)
+; NOSSE-NEXT:    popl %eax
+; NOSSE-NEXT:    retl
+;
+; X86-SSE-LABEL: func_02:
+; X86-SSE:       # %bb.0:
+; X86-SSE-NEXT:    pushl %eax
+; X86-SSE-NEXT:    fnstcw (%esp)
+; X86-SSE-NEXT:    andb $-13, {{[0-9]+}}(%esp)
+; X86-SSE-NEXT:    fldcw (%esp)
+; X86-SSE-NEXT:    stmxcsr (%esp)
+; X86-SSE-NEXT:    andb $-97, {{[0-9]+}}(%esp)
+; X86-SSE-NEXT:    ldmxcsr (%esp)
+; X86-SSE-NEXT:    popl %eax
+; X86-SSE-NEXT:    retl
+;
+; X64-LABEL: func_02:
+; X64:       # %bb.0:
+; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    andb $-13, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    andb $-97, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    retq
+  call void @llvm.set.rounding(i32 1)  ; ToNearestTiesToEven (CW[11-10] = 00)
+  ret void
+}
+
+define void @func_03() nounwind {
+; NOSSE-LABEL: func_03:
+; NOSSE:       # %bb.0:
+; NOSSE-NEXT:    pushl %eax
+; NOSSE-NEXT:    fnstcw (%esp)
+; NOSSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
+; NOSSE-NEXT:    andl (%esp), %eax
+; NOSSE-NEXT:    orl $2048, %eax # imm = 0x800
+; NOSSE-NEXT:    movw %ax, (%esp)
+; NOSSE-NEXT:    fldcw (%esp)
+; NOSSE-NEXT:    popl %eax
+; NOSSE-NEXT:    retl
+;
+; X86-SSE-LABEL: func_03:
+; X86-SSE:       # %bb.0:
+; X86-SSE-NEXT:    pushl %eax
+; X86-SSE-NEXT:    fnstcw (%esp)
+; X86-SSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
+; X86-SSE-NEXT:    andl (%esp), %eax
+; X86-SSE-NEXT:    orl $2048, %eax # imm = 0x800
+; X86-SSE-NEXT:    movw %ax, (%esp)
+; X86-SSE-NEXT:    fldcw (%esp)
+; X86-SSE-NEXT:    stmxcsr (%esp)
+; X86-SSE-NEXT:    movl $-24577, %eax # imm = 0x9FFF
+; X86-SSE-NEXT:    andl (%esp), %eax
+; X86-SSE-NEXT:    orl $16384, %eax # imm = 0x4000
+; X86-SSE-NEXT:    movl %eax, (%esp)
+; X86-SSE-NEXT:    ldmxcsr (%esp)
+; X86-SSE-NEXT:    popl %eax
+; X86-SSE-NEXT:    retl
+;
+; X64-LABEL: func_03:
+; X64:       # %bb.0:
+; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    movl $-3073, %eax # imm = 0xF3FF
+; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
+; X64-NEXT:    orl $2048, %eax # imm = 0x800
+; X64-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    movl $-24577, %eax # imm = 0x9FFF
+; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
+; X64-NEXT:    orl $16384, %eax # imm = 0x4000
+; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    retq
+  call void @llvm.set.rounding(i32 2)  ; Upward (CW[11-10] = 10)
+  ret void
+}
+
+define void @func_04() nounwind {
+; NOSSE-LABEL: func_04:
+; NOSSE:       # %bb.0:
+; NOSSE-NEXT:    pushl %eax
+; NOSSE-NEXT:    fnstcw (%esp)
+; NOSSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
+; NOSSE-NEXT:    andl (%esp), %eax
+; NOSSE-NEXT:    orl $1024, %eax # imm = 0x400
+; NOSSE-NEXT:    movw %ax, (%esp)
+; NOSSE-NEXT:    fldcw (%esp)
+; NOSSE-NEXT:    popl %eax
+; NOSSE-NEXT:    retl
+;
+; X86-SSE-LABEL: func_04:
+; X86-SSE:       # %bb.0:
+; X86-SSE-NEXT:    pushl %eax
+; X86-SSE-NEXT:    fnstcw (%esp)
+; X86-SSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
+; X86-SSE-NEXT:    andl (%esp), %eax
+; X86-SSE-NEXT:    orl $1024, %eax # imm = 0x400
+; X86-SSE-NEXT:    movw %ax, (%esp)
+; X86-SSE-NEXT:    fldcw (%esp)
+; X86-SSE-NEXT:    stmxcsr (%esp)
+; X86-SSE-NEXT:    movl $-24577, %eax # imm = 0x9FFF
+; X86-SSE-NEXT:    andl (%esp), %eax
+; X86-SSE-NEXT:    orl $8192, %eax # imm = 0x2000
+; X86-SSE-NEXT:    movl %eax, (%esp)
+; X86-SSE-NEXT:    ldmxcsr (%esp)
+; X86-SSE-NEXT:    popl %eax
+; X86-SSE-NEXT:    retl
+;
+; X64-LABEL: func_04:
+; X64:       # %bb.0:
+; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    movl $-3073, %eax # imm = 0xF3FF
+; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
+; X64-NEXT:    orl $1024, %eax # imm = 0x400
+; X64-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    movl $-24577, %eax # imm = 0x9FFF
+; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
+; X64-NEXT:    orl $8192, %eax # imm = 0x2000
+; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    retq
+  call void @llvm.set.rounding(i32 3)  ; Downward (CW[11-10] = 01)
+  ret void
+}
+
+define void @func_05(i32 %x) nounwind {
+; NOSSE-LABEL: func_05:
+; NOSSE:       # %bb.0:
+; NOSSE-NEXT:    pushl %eax
+; NOSSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; NOSSE-NEXT:    leal 4(%eax,%eax), %ecx
+; NOSSE-NEXT:    movl $201, %eax
+; NOSSE-NEXT:    # kill: def $cl killed $cl killed $ecx
+; NOSSE-NEXT:    shll %cl, %eax
+; NOSSE-NEXT:    andl $3072, %eax # imm = 0xC00
+; NOSSE-NEXT:    fnstcw (%esp)
+; NOSSE-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
+; NOSSE-NEXT:    andl (%esp), %ecx
+; NOSSE-NEXT:    orl %eax, %ecx
+; NOSSE-NEXT:    movw %cx, (%esp)
+; NOSSE-NEXT:    fldcw (%esp)
+; NOSSE-NEXT:    popl %eax
+; NOSSE-NEXT:    retl
+;
+; X86-SSE-LABEL: func_05:
+; X86-SSE:       # %bb.0:
+; X86-SSE-NEXT:    pushl %eax
+; X86-SSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X86-SSE-NEXT:    leal 4(%eax,%eax), %ecx
+; X86-SSE-NEXT:    movl $201, %eax
+; X86-SSE-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X86-SSE-NEXT:    shll %cl, %eax
+; X86-SSE-NEXT:    andl $3072, %eax # imm = 0xC00
+; X86-SSE-NEXT:    fnstcw (%esp)
+; X86-SSE-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
+; X86-SSE-NEXT:    andl (%esp), %ecx
+; X86-SSE-NEXT:    orl %eax, %ecx
+; X86-SSE-NEXT:    movw %cx, (%esp)
+; X86-SSE-NEXT:    fldcw (%esp)
+; X86-SSE-NEXT:    stmxcsr (%esp)
+; X86-SSE-NEXT:    movl $-24577, %ecx # imm = 0x9FFF
+; X86-SSE-NEXT:    andl (%esp), %ecx
+; X86-SSE-NEXT:    leal (%ecx,%eax,8), %eax
+; X86-SSE-NEXT:    movl %eax, (%esp)
+; X86-SSE-NEXT:    ldmxcsr (%esp)
+; X86-SSE-NEXT:    popl %eax
+; X86-SSE-NEXT:    retl
+;
+; X64-LABEL: func_05:
+; X64:       # %bb.0:
+; X64-NEXT:    # kill: def $edi killed $edi def $rdi
+; X64-NEXT:    leal 4(%rdi,%rdi), %ecx
+; X64-NEXT:    movl $201, %eax
+; X64-NEXT:    # kill: def $cl killed $cl killed $ecx
+; X64-NEXT:    shll %cl, %eax
+; X64-NEXT:    andl $3072, %eax # imm = 0xC00
+; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
+; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %ecx
+; X64-NEXT:    orl %eax, %ecx
+; X64-NEXT:    movw %cx, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
+; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    movl $-24577, %ecx # imm = 0x9FFF
+; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %ecx
+; X64-NEXT:    leal (%rcx,%rax,8), %eax
+; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
+; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
+; X64-NEXT:    retq
+  call void @llvm.set.rounding(i32 %x)  ; Downward
+  ret void
+}
+
+attributes #0 = { nounwind "use-soft-float"="true" }
+;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
+; GISEL-X64: {{.*}}
+; GISEL-X86-NOSSE: {{.*}}
+; GISEL-X86-SSE: {{.*}}
+; SDAG-X64: {{.*}}
+; SDAG-X86-NOSSE: {{.*}}
+; SDAG-X86-SSE: {{.*}}

@JaydeepChauhan14
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@arsenm, @RKSimon, @e-kud please review PR.

@e-kud e-kud requested review from arsenm, RKSimon and e-kud August 27, 2025 00:52
e-kud
e-kud reviewed Aug 27, 2025
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Failures look unrelated:

lldb-api :: lang/cpp/libcxx-internals-recognizer/TestLibcxxInternalsRecognizer.py
LLVM :: CodeGen/AMDGPU/llvm.amdgcn.rcp.bf16.ll

@JaydeepChauhan14 maybe update the branch?

llvm/test/CodeGen/X86/llvm.set.rounding.ll Outdated
@@ -0,0 +1,256 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=i686-unknown-linux-gnu -mattr=-sse -verify-machineinstrs < %s | FileCheck %s -check-prefixes=NOSSE,SDAG-X86-NOSSE
; RUN: llc -mtriple=i686-unknown-linux-gnu -global-isel=1 -global-isel-abort=2 -mattr=-sse -verify-machineinstrs < %s | FileCheck %s -check-prefixes=NOSSE,GISEL-X86-NOSSE
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What about fastisel?

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might as well rename it isel-llvm.set.rounding.ll and match the isel test coverage in the other isel-* test files

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Done.

RKSimon
RKSimon reviewed Aug 29, 2025
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please update the summary to account for the new filename

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@arsenm arsenm Awaiting requested review from arsenm

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4 participants
@JaydeepChauhan14 @llvmbot @RKSimon @e-kud