e0ed0333f0
Re-landing #116970 after fixing miscompilation error. The original change made it possible for CMPZ to have multiple uses; `ARMDAGToDAGISel::SelectCMPZ` was not prepared for this. Pull Request: https://github.com/llvm/llvm-project/pull/118887 Original commit message: Following #116547 and #116676, this PR changes the type of results and operands of some nodes to accept / return a normal type instead of Glue. Unfortunately, changing the result type of one node requires changing the operand types of all potential consumer nodes, which in turn requires changing the result types of all other possible producer nodes. So this is a bulk change.
54 lines
2.0 KiB
LLVM
54 lines
2.0 KiB
LLVM
; RUN: llc < %s -mtriple=armv6-apple-ios0.0.0 -mcpu=arm1136jf-s -verify-machineinstrs | FileCheck %s
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; RUN: llc -mtriple=thumbv6m-eabi -mattr=+execute-only -verify-machineinstrs %s -o - | FileCheck --check-prefix=CHECK-T1 %s
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
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; Don't CSE a cmp across a call that clobbers CPSR.
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;
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; CHECK: cmp
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; CHECK-T1: movs [[REG:r[0-7]+]], :upper8_15:
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; CHECK-T1-NEXT: lsls [[REG]], [[REG]], #8
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; CHECK-T1-NEXT: adds [[REG]], :upper0_7:
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; CHECK-T1-NEXT: lsls [[REG]], [[REG]], #8
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; CHECK-T1-NEXT: adds [[REG]], :lower8_15:
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; CHECK-T1-NEXT: lsls [[REG]], [[REG]], #8
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; CHECK-T1-NEXT: adds [[REG]], :lower0_7:
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; CHECK-T1: movs [[REG:r[0-7]+]], :upper8_15:
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; CHECK-T1-NEXT: lsls [[REG]], [[REG]], #8
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; CHECK-T1-NEXT: adds [[REG]], :upper0_7:
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; CHECK-T1-NEXT: lsls [[REG]], [[REG]], #8
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; CHECK-T1-NEXT: adds [[REG]], :lower8_15:
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; CHECK-T1-NEXT: lsls [[REG]], [[REG]], #8
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; CHECK-T1-NEXT: adds [[REG]], :lower0_7:
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; CHECK-T1: cmp
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; CHECK: S_trimzeros
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; CHECK-T1: S_trimzeros
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; CHECK-NOT: moveq
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; CHECK-T1-NOT: beq
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; CHECK: strlen
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@F_floatmul.man1 = external global [200 x i8], align 1
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@F_floatmul.man2 = external global [200 x i8], align 1
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declare i32 @strlen(ptr nocapture) nounwind readonly
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declare void @S_trimzeros(...)
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define ptr @F_floatmul(ptr %f1, ptr %f2, i32 %a, i32 %b) nounwind ssp {
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entry:
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%0 = icmp eq i32 %a, %b
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br i1 %0, label %while.end42, label %while.body37
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while.body37: ; preds = %while.body37, %entry
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br i1 false, label %while.end42, label %while.body37
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while.end42: ; preds = %while.body37, %entry
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%. = select i1 %0, ptr @F_floatmul.man1, ptr @F_floatmul.man2
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%.92 = select i1 %0, ptr @F_floatmul.man2, ptr @F_floatmul.man1
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tail call void @S_trimzeros(ptr %.92) nounwind
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%call47 = tail call i32 @strlen(ptr %.) nounwind
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unreachable
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}
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