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c486a43e86
Summary: The Signal Processing Engine (SPE) is found on NXP/Freescale e500v1, e500v2, and several e200 cores. This adds support targeting the e500v2, as this is more common than the e500v1, and is in SoCs still on the market. This patch is very intrusive because the SPE is binary incompatible with the traditional FPU. After discussing with others, the cleanest solution was to make both SPE and FPU features on top of a base PowerPC subset, so all FPU instructions are now wrapped with HasFPU predicates. Supported by this are: * Code generation following the SPE ABI at the LLVM IR level (calling conventions) * Single- and Double-precision math at the level supported by the APU. Still to do: * Vector operations * SPE intrinsics As this changes the Callee-saved register list order, one test, which tests the precise generated code, was updated to account for the new register order. Reviewed by: nemanjai Differential Revision: https://reviews.llvm.org/D44830 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337347 91177308-0d34-0410-b5e6-96231b3b80d8
302 lines
6.9 KiB
LLVM
302 lines
6.9 KiB
LLVM
; FIXME: FastISel currently returns false if it hits code that uses VSX
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; registers and with -fast-isel-abort=1 turned on the test case will then fail.
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; When fastisel better supports VSX fix up this test case.
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;
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; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -mattr=-vsx | FileCheck %s --check-prefix=ELF64
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; RUN: llc < %s -O0 -verify-machineinstrs -fast-isel-abort=1 -mtriple=powerpc-unknown-linux-gnu -mcpu=e500 -mattr=spe | FileCheck %s --check-prefix=SPE
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define void @t1a(float %a) nounwind {
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entry:
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; ELF64: t1a
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; SPE: t1a
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%cmp = fcmp oeq float %a, 0.000000e+00
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; ELF64: addis
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; ELF64: lfs
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; ELF64: fcmpu
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; SPE: efscmpeq
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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declare void @foo()
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define void @t1b(float %a) nounwind {
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entry:
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; ELF64: t1b
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; SPE: t1b
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%cmp = fcmp oeq float %a, -0.000000e+00
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; ELF64: addis
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; ELF64: lfs
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; ELF64: fcmpu
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; SPE: efscmpeq
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t2a(double %a) nounwind {
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entry:
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; ELF64: t2a
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; SPE: t2a
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%cmp = fcmp oeq double %a, 0.000000e+00
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; ELF64: addis
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; ELF64: lfd
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; ELF64: fcmpu
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; SPE: efdcmpeq
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t2b(double %a) nounwind {
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entry:
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; ELF64: t2b
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; SPE: t2b
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%cmp = fcmp oeq double %a, -0.000000e+00
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; ELF64: addis
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; ELF64: lfd
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; ELF64: fcmpu
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; SPE: efdcmpeq
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t4(i8 signext %a) nounwind {
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entry:
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; ELF64: t4
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%cmp = icmp eq i8 %a, -1
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; ELF64: extsb
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; ELF64: cmpwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t5(i8 zeroext %a) nounwind {
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entry:
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; ELF64: t5
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%cmp = icmp eq i8 %a, 1
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; ELF64: extsb
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; ELF64: cmpwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t6(i16 signext %a) nounwind {
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entry:
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; ELF64: t6
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%cmp = icmp eq i16 %a, -1
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; ELF64: extsh
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; ELF64: cmpwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t7(i16 zeroext %a) nounwind {
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entry:
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; ELF64: t7
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%cmp = icmp eq i16 %a, 1
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; ELF64: extsh
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; ELF64: cmpwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t8(i32 %a) nounwind {
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entry:
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; ELF64: t8
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%cmp = icmp eq i32 %a, -1
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; ELF64: cmpwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t9(i32 %a) nounwind {
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entry:
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; ELF64: t9
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%cmp = icmp eq i32 %a, 1
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; ELF64: cmpwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t10(i32 %a) nounwind {
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entry:
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; ELF64: t10
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%cmp = icmp eq i32 %a, 384
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; ELF64: cmpwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t11(i32 %a) nounwind {
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entry:
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; ELF64: t11
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%cmp = icmp eq i32 %a, 4096
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; ELF64: cmpwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t12(i8 %a) nounwind {
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entry:
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; ELF64: t12
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%cmp = icmp ugt i8 %a, -113
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; ELF64: clrlwi
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; ELF64: cmplwi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t13() nounwind ssp {
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entry:
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; ELF64: t13
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%cmp = icmp slt i32 -123, -2147483648
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; ELF64: li
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; ELF64: lis
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; ELF64: cmpw
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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ret void
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if.end: ; preds = %entry
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ret void
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}
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define void @t14(i64 %a) nounwind {
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entry:
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; ELF64: t14
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%cmp = icmp eq i64 %a, -1
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; ELF64: cmpdi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t15(i64 %a) nounwind {
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entry:
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; ELF64: t15
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%cmp = icmp eq i64 %a, 1
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; ELF64: cmpdi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t16(i64 %a) nounwind {
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entry:
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; ELF64: t16
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%cmp = icmp eq i64 %a, 384
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; ELF64: cmpdi
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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define void @t17(i64 %a) nounwind {
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entry:
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; ELF64: t17
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%cmp = icmp eq i64 %a, 32768
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; Extra operand so we don't match on cmpdi.
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; ELF64: cmpd {{[0-9]+}}
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br i1 %cmp, label %if.then, label %if.end
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if.then: ; preds = %entry
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call void @foo()
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br label %if.end
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if.end: ; preds = %if.then, %entry
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ret void
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}
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