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[PowerPC][NFC] Add a test for vrsave usage iinline asm.

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Add a lit test that that uses vrsave register in the clobber list, and
tests the extended mnemonics mtvrsave and mfvrsave.
This commit is contained in:
Sean Fertile 2020-02-20 09:18:10 -05:00
parent 0974dd862a
commit 8a3553276e
1 changed files with 42 additions and 0 deletions
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42
test/CodeGen/PowerPC/vrsave-inline-asm.ll Normal file
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; RUN: llc -mtriple=powerpc64-unknown-linux-gnu -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=powerpc-unknown-linux-gnu -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=powerpc64-unknown-freebsd -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=powerpc-unknown-freebsd -verify-machineinstrs < %s | FileCheck %s
define dso_local void @moveToVRSave(i32 signext %i) {
entry:
tail call void asm sideeffect "mtvrsave $0", "r,~{vrsave}"(i32 %i)
ret void
}
define dso_local signext i32 @moveFromVRSave() {
entry:
%0 = tail call i32 asm sideeffect "mfvrsave $0", "=r"()
ret i32 %0
}
define dso_local void @moveToSPR(i32 signext %i) {
entry:
tail call void asm sideeffect "mtspr 256, $0", "r,~{vrsave}"(i32 %i)
ret void
}
define dso_local signext i32 @moveFromSPR() {
entry:
%0 = tail call i32 asm sideeffect "mfspr $0, 256", "=r"()
ret i32 %0
}
; CHECK-LABEl: moveToVRSave:
; CHECK: mtvrsave 3
; CHECK-LABEL: moveFromVRSave:
; CHECK: mfvrsave {{[0-9]+}}
; CHECK-LABEL: moveToSPR:
; CHECK: mtspr 256, 3
; CHECK-LABEL: moveFromSPR:
; CHECK: mfspr {{[0-9]}}, 256