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
154 lines
5.1 KiB
LLVM
154 lines
5.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=powerpc64le-- -verify-machineinstrs | FileCheck %s
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; RUN: llc < %s -mtriple=powerpc64-- -verify-machineinstrs | FileCheck %s \
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; RUN: --check-prefix=BE
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%struct.__jmp_buf_tag = type { [64 x i64], i32, %struct.__sigset_t, [8 x i8] }
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%struct.__sigset_t = type { [16 x i64] }
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@.str = private unnamed_addr constant [33 x i8] c"Successfully returned from main\0A\00", align 1
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; Function Attrs: nounwind
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define dso_local signext i32 @main(i32 signext %argc, ptr nocapture readnone %argv) local_unnamed_addr #0 {
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; CHECK-LABEL: main:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: mfocrf 12, 32
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; CHECK-NEXT: mflr 0
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; CHECK-NEXT: std 31, -8(1)
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; CHECK-NEXT: stw 12, 8(1)
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; CHECK-NEXT: stdu 1, -784(1)
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; CHECK-NEXT: # kill: def $r3 killed $r3 killed $x3
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; CHECK-NEXT: cmpwi 2, 3, 2
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; CHECK-NEXT: std 0, 800(1)
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; CHECK-NEXT: mr 31, 1
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; CHECK-NEXT: li 3, 0
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; CHECK-NEXT: blt 2, .LBB0_3
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; CHECK-NEXT: # %bb.1: # %if.end
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; CHECK-NEXT: addi 3, 31, 112
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; CHECK-NEXT: bl _setjmp
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; CHECK-NEXT: nop
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; CHECK-NEXT: crmove 20, 10
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; CHECK-NEXT: # kill: def $r3 killed $r3 killed $x3
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; CHECK-NEXT: cmpwi 3, 0
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; CHECK-NEXT: crorc 20, 10, 2
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; CHECK-NEXT: crmove 21, 2
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; CHECK-NEXT: bc 4, 20, .LBB0_4
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; CHECK-NEXT: # %bb.2: # %if.end5
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; CHECK-NEXT: addis 3, 2, .L.str@toc@ha
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; CHECK-NEXT: addi 3, 3, .L.str@toc@l
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; CHECK-NEXT: bl printf
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; CHECK-NEXT: nop
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; CHECK-NEXT: # kill: def $r3 killed $r3 killed $x3
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; CHECK-NEXT: .LBB0_3: # %return
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; CHECK-NEXT: # kill: def $r3 killed $r3 def $x3
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; CHECK-NEXT: addi 1, 31, 784
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; CHECK-NEXT: ld 0, 16(1)
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; CHECK-NEXT: lwz 12, 8(1)
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; CHECK-NEXT: ld 31, -8(1)
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; CHECK-NEXT: mtocrf 32, 12
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; CHECK-NEXT: mtlr 0
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; CHECK-NEXT: blr
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; CHECK-NEXT: .LBB0_4: # %if.then3
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; CHECK-NEXT: ld 4, 0(1)
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; CHECK-NEXT: stdu 4, -16(1)
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; CHECK-NEXT: addi 3, 1, 96
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; CHECK-NEXT: li 4, -1
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; CHECK-NEXT: stb 4, 0(3)
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; CHECK-NEXT: addi 4, 31, 112
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; CHECK-NEXT: bl test
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; CHECK-NEXT: nop
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;
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; BE-LABEL: main:
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; BE: # %bb.0: # %entry
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; BE-NEXT: mfcr 12
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; BE-NEXT: mflr 0
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; BE-NEXT: std 31, -8(1)
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; BE-NEXT: stw 12, 8(1)
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; BE-NEXT: stdu 1, -800(1)
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; BE-NEXT: li 4, 0
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; BE-NEXT: # kill: def $r3 killed $r3 killed $x3
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; BE-NEXT: cmpwi 2, 3, 2
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; BE-NEXT: mr 3, 4
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; BE-NEXT: std 0, 816(1)
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; BE-NEXT: mr 31, 1
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; BE-NEXT: blt 2, .LBB0_3
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; BE-NEXT: # %bb.1: # %if.end
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; BE-NEXT: addi 3, 31, 128
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; BE-NEXT: bl _setjmp
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; BE-NEXT: nop
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; BE-NEXT: crmove 20, 10
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; BE-NEXT: # kill: def $r3 killed $r3 killed $x3
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; BE-NEXT: cmpwi 3, 0
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; BE-NEXT: crorc 20, 10, 2
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; BE-NEXT: crmove 21, 2
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; BE-NEXT: bc 4, 20, .LBB0_4
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; BE-NEXT: # %bb.2: # %if.end5
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; BE-NEXT: addis 3, 2, .L.str@toc@ha
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; BE-NEXT: addi 3, 3, .L.str@toc@l
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; BE-NEXT: bl printf
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; BE-NEXT: nop
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; BE-NEXT: # kill: def $r3 killed $r3 killed $x3
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; BE-NEXT: .LBB0_3: # %return
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; BE-NEXT: # kill: def $r3 killed $r3 def $x3
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; BE-NEXT: addi 1, 31, 800
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; BE-NEXT: ld 0, 16(1)
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; BE-NEXT: lwz 12, 8(1)
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; BE-NEXT: ld 31, -8(1)
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; BE-NEXT: mtlr 0
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; BE-NEXT: mtcrf 32, 12 # cr2
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; BE-NEXT: blr
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; BE-NEXT: .LBB0_4: # %if.then3
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; BE-NEXT: ld 4, 0(1)
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; BE-NEXT: stdu 4, -16(1)
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; BE-NEXT: addi 3, 1, 112
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; BE-NEXT: li 4, -1
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; BE-NEXT: stb 4, 0(3)
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; BE-NEXT: addi 4, 31, 128
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; BE-NEXT: bl test
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; BE-NEXT: nop
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entry:
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%env_buffer = alloca [1 x %struct.__jmp_buf_tag], align 16
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%cmp = icmp slt i32 %argc, 2
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br i1 %cmp, label %return, label %if.end
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if.end: ; preds = %entry
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call void @llvm.lifetime.start.p0(i64 656, ptr nonnull %env_buffer) #5
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%call = call signext i32 @_setjmp(ptr nonnull %env_buffer) #6
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%cmp1 = icmp ne i32 %argc, 2
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%cmp2 = icmp eq i32 %call, 0
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%or.cond = and i1 %cmp1, %cmp2
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br i1 %or.cond, label %if.then3, label %if.end5
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if.then3: ; preds = %if.end
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%0 = alloca [8 x i8], align 16
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store i8 -1, ptr %0, align 16
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call void @test(ptr nonnull %0, ptr nonnull %env_buffer) #7
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unreachable
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if.end5: ; preds = %if.end
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%call6 = call signext i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str)
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call void @llvm.lifetime.end.p0(i64 656, ptr nonnull %env_buffer) #5
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br label %return
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return: ; preds = %entry, %if.end5
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%retval.0 = phi i32 [ %call6, %if.end5 ], [ 0, %entry ]
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ret i32 %retval.0
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}
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; Function Attrs: argmemonly nofree nosync nounwind willreturn
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declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)
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; Function Attrs: nounwind returns_twice
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declare signext i32 @_setjmp(ptr) local_unnamed_addr
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; Function Attrs: noreturn
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declare void @test(ptr, ptr) local_unnamed_addr
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; Function Attrs: nofree nounwind
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declare noundef signext i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr
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; Function Attrs: argmemonly nofree nosync nounwind willreturn
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declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture)
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attributes #0 = { nounwind }
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attributes #6 = { nounwind returns_twice }
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