eb7d16ea25
mflr is kind of expensive on Power version smaller than 10, so we should schedule the store for the mflr's def away from mflr. In epilogue, the expensive mtlr has no user for its def, so it doesn't matter that the load and the mtlr are back-to-back. Reviewed By: RolandF Differential Revision: https://reviews.llvm.org/D137423
96 lines
3.4 KiB
LLVM
96 lines
3.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -verify-machineinstrs -mattr=-vsx -mattr=+allow-unaligned-fp-access | FileCheck %s
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; ModuleID = 'foo.c'
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target triple = "powerpc-unknown-linux-gnu"
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%struct.anon = type <{ i8, float }>
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@s = global %struct.anon <{ i8 3, float 0x4014666660000000 }> ; <ptr> [#uses=1]
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@u = global <{ i8, double }> <{ i8 3, double 5.100000e+00 }> ; <ptr> [#uses=1]
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@t = weak global %struct.anon zeroinitializer ; <ptr> [#uses=2]
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@v = weak global <{ i8, double }> zeroinitializer ; <ptr> [#uses=2]
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@.str = internal constant [8 x i8] c"%f %lf\0A\00" ; <ptr> [#uses=1]
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define i32 @foo() {
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: stwu 1, -16(1)
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: lis 3, s@ha
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; CHECK-NEXT: la 3, s@l(3)
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; CHECK-NEXT: lis 4, u@ha
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; CHECK-NEXT: lwz 3, 1(3)
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; CHECK-NEXT: la 4, u@l(4)
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; CHECK-NEXT: lfd 0, 1(4)
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; CHECK-NEXT: lis 4, t@ha
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; CHECK-NEXT: la 4, t@l(4)
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; CHECK-NEXT: stw 3, 1(4)
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; CHECK-NEXT: lis 3, v@ha
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; CHECK-NEXT: la 3, v@l(3)
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; CHECK-NEXT: stfd 0, 1(3)
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; CHECK-NEXT: lwz 3, 12(1)
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; CHECK-NEXT: addi 1, 1, 16
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; CHECK-NEXT: blr
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entry:
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%retval = alloca i32, align 4 ; <ptr> [#uses=1]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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%tmp = getelementptr %struct.anon, ptr @s, i32 0, i32 1 ; <ptr> [#uses=1]
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%tmp1 = load float, ptr %tmp, align 1 ; <float> [#uses=1]
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%tmp2 = getelementptr %struct.anon, ptr @t, i32 0, i32 1 ; <ptr> [#uses=1]
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store float %tmp1, ptr %tmp2, align 1
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%tmp3 = getelementptr <{ i8, double }>, ptr @u, i32 0, i32 1 ; <ptr> [#uses=1]
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%tmp4 = load double, ptr %tmp3, align 1 ; <double> [#uses=1]
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%tmp5 = getelementptr <{ i8, double }>, ptr @v, i32 0, i32 1 ; <ptr> [#uses=1]
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store double %tmp4, ptr %tmp5, align 1
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br label %return
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return: ; preds = %entry
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%retval6 = load i32, ptr %retval ; <i32> [#uses=1]
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ret i32 %retval6
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}
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define i32 @main() {
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; CHECK-LABEL: main:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: mflr 0
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; CHECK-NEXT: stwu 1, -16(1)
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; CHECK-NEXT: stw 0, 20(1)
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset lr, 4
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; CHECK-NEXT: bl foo
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; CHECK-NEXT: lis 3, t@ha
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; CHECK-NEXT: la 3, t@l(3)
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; CHECK-NEXT: lfs 1, 1(3)
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; CHECK-NEXT: lis 3, v@ha
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; CHECK-NEXT: la 3, v@l(3)
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; CHECK-NEXT: lfd 2, 1(3)
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; CHECK-NEXT: lis 3, .str@ha
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; CHECK-NEXT: la 3, .str@l(3)
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; CHECK-NEXT: creqv 6, 6, 6
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; CHECK-NEXT: bl printf
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; CHECK-NEXT: lwz 3, 12(1)
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; CHECK-NEXT: lwz 0, 20(1)
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; CHECK-NEXT: addi 1, 1, 16
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; CHECK-NEXT: mtlr 0
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; CHECK-NEXT: blr
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entry:
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%retval = alloca i32, align 4 ; <ptr> [#uses=1]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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%tmp = call i32 @foo( ) ; <i32> [#uses=0]
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%tmp1 = getelementptr %struct.anon, ptr @t, i32 0, i32 1 ; <ptr> [#uses=1]
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%tmp2 = load float, ptr %tmp1, align 1 ; <float> [#uses=1]
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%tmp23 = fpext float %tmp2 to double ; <double> [#uses=1]
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%tmp4 = getelementptr <{ i8, double }>, ptr @v, i32 0, i32 1 ; <ptr> [#uses=1]
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%tmp5 = load double, ptr %tmp4, align 1 ; <double> [#uses=1]
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%tmp6 = getelementptr [8 x i8], ptr @.str, i32 0, i32 0 ; <ptr> [#uses=1]
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%tmp7 = call i32 (ptr, ...) @printf( ptr %tmp6, double %tmp23, double %tmp5 ) ; <i32> [#uses=0]
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br label %return
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return: ; preds = %entry
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%retval8 = load i32, ptr %retval ; <i32> [#uses=1]
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ret i32 %retval8
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}
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declare i32 @printf(ptr, ...)
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