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https://github.com/RPCS3/llvm-mirror.git
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a7843cefbb
When generating a floating point comparison we currently unconditionally generate VCMPE. This has the sideeffect of setting the cumulative Invalid bit in FPSCR if any of the operands are QNaN. It is expected that use of a relational predicate on a QNaN value should raise Invalid. Quoting from the C standard: The relational and equality operators support the usual mathematical relationships between numeric values. For any ordered pair of numeric values exactly one of relationships the less, greater, equal and is true. Relational operators may raise the floating-point exception when argument values are NaNs. The standard doesn't explicitly state the expectation for equality operators, but the implication and obvious expectation is that equality operators should not raise Invalid on a QNaN input, as those predicates are wholly defined on unordered inputs (to return not equal). Therefore, add a new operand to ARMISD::FPCMP and FPCMPZ indicating if QNaN should raise Invalid, and pipe that through to TableGen. llvm-svn: 294945
252 lines
6.3 KiB
LLVM
252 lines
6.3 KiB
LLVM
; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios -verify-machineinstrs | FileCheck %s --check-prefix=ARM
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; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=armv7-linux-gnueabi -verify-machineinstrs | FileCheck %s --check-prefix=ARM
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; RUN: llc < %s -O0 -fast-isel-abort=1 -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios -verify-machineinstrs | FileCheck %s --check-prefix=THUMB
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define void @t1a(float %a) uwtable ssp {
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entry:
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; ARM: t1a
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; THUMB: t1a
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%cmp = fcmp oeq float %a, 0.000000e+00
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; ARM: vcmp.f32 s{{[0-9]+}}, #0
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; THUMB: vcmp.f32 s{{[0-9]+}}, #0
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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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tail 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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; Shouldn't be able to encode -0.0 imm.
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define void @t1b(float %a) uwtable ssp {
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entry:
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; ARM: t1b
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; THUMB: t1b
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%cmp = fcmp oeq float %a, -0.000000e+00
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; ARM: vldr
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; ARM: vcmp.f32 s{{[0-9]+}}, s{{[0-9]+}}
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; THUMB: vldr
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; THUMB: vcmp.f32 s{{[0-9]+}}, s{{[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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tail 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) uwtable ssp {
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entry:
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; ARM: t2a
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; THUMB: t2a
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%cmp = fcmp oeq double %a, 0.000000e+00
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; ARM: vcmp.f64 d{{[0-9]+}}, #0
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; THUMB: vcmp.f64 d{{[0-9]+}}, #0
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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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tail 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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; Shouldn't be able to encode -0.0 imm.
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define void @t2b(double %a) uwtable ssp {
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entry:
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; ARM: t2b
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; THUMB: t2b
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%cmp = fcmp oeq double %a, -0.000000e+00
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; ARM: vldr
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; ARM: vcmp.f64 d{{[0-9]+}}, d{{[0-9]+}}
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; THUMB: vldr
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; THUMB: vcmp.f64 d{{[0-9]+}}, d{{[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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tail 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) uwtable ssp {
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entry:
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; ARM: t4
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; THUMB: t4
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%cmp = icmp eq i8 %a, -1
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; ARM: cmn r{{[0-9]}}, #1
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; THUMB: cmn.w r{{[0-9]}}, #1
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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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tail 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) uwtable ssp {
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entry:
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; ARM: t5
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; THUMB: t5
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%cmp = icmp eq i8 %a, 1
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; ARM: cmp r{{[0-9]}}, #1
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; THUMB: cmp r{{[0-9]}}, #1
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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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tail 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) uwtable ssp {
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entry:
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; ARM: t6
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; THUMB: t6
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%cmp = icmp eq i16 %a, -1
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; ARM: cmn r{{[0-9]}}, #1
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; THUMB: cmn.w r{{[0-9]}}, #1
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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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tail 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) uwtable ssp {
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entry:
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; ARM: t7
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; THUMB: t7
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%cmp = icmp eq i16 %a, 1
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; ARM: cmp r{{[0-9]}}, #1
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; THUMB: cmp r{{[0-9]}}, #1
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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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tail 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) uwtable ssp {
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entry:
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; ARM: t8
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; THUMB: t8
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%cmp = icmp eq i32 %a, -1
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; ARM: cmn r{{[0-9]}}, #1
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; THUMB: cmn.w r{{[0-9]}}, #1
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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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tail 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) uwtable ssp {
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entry:
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; ARM: t9
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; THUMB: t9
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%cmp = icmp eq i32 %a, 1
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; ARM: cmp r{{[0-9]}}, #1
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; THUMB: cmp r{{[0-9]}}, #1
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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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tail 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) uwtable ssp {
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entry:
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; ARM: t10
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; THUMB: t10
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%cmp = icmp eq i32 %a, 384
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; ARM: cmp r{{[0-9]}}, #384
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; THUMB: cmp.w r{{[0-9]}}, #384
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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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tail 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) uwtable ssp {
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entry:
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; ARM: t11
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; THUMB: t11
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%cmp = icmp eq i32 %a, 4096
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; ARM: cmp r{{[0-9]}}, #4096
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; THUMB: cmp.w r{{[0-9]}}, #4096
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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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tail 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) uwtable ssp {
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entry:
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; ARM: t12
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; THUMB: t12
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%cmp = icmp ugt i8 %a, -113
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; ARM: cmp r{{[0-9]}}, #143
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; THUMB: cmp r{{[0-9]}}, #143
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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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tail 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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; rdar://11038907
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; When comparing LONG_MIN/INT_MIN use a cmp instruction.
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define void @t13() nounwind ssp {
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entry:
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; ARM: t13
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; THUMB: t13
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%cmp = icmp slt i32 -123, -2147483648
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; ARM: cmp r{{[0-9]}}, #-2147483648
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; THUMB: cmp.w r{{[0-9]}}, #-2147483648
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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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