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76d1801e90
For some reason I never got around to adding these at the same time as the signed versions. No idea why. I'm not sure whether this SystemZII::BranchC* stuff is useful, or whether it should just be replaced with an "is normal" flag. I'll leave that for later though. There are some boundary conditions that can be tweaked, such as preferring unsigned comparisons for equality with [128, 256), and "<= 255" over "< 256", but again I'll leave those for a separate patch. llvm-svn: 190930
51 lines
1.4 KiB
LLVM
51 lines
1.4 KiB
LLVM
; Test 32-bit unsigned comparisons in which the second operand is constant.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check a value near the low end of the range. We use signed forms for
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; comparisons with zero, or things that are equivalent to them.
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define double @f1(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f1:
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; CHECK: clijh %r2, 1
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp ugt i32 %i1, 1
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the top of the CLIJ range.
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define double @f2(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f2:
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; CHECK: clijl %r2, 255
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp ult i32 %i1, 255
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check the next value up, which needs a separate comparison.
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define double @f3(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f3:
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; CHECK: clfi %r2, 256
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; CHECK: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp ult i32 %i1, 256
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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; Check a value near the high end of the range.
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define double @f4(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f4:
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; CHECK: clfi %r2, 4294967280
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; CHECK-NEXT: jl
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp ult i32 %i1, 4294967280
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%res = select i1 %cond, double %a, double %b
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ret double %res
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}
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