mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-20 10:30:03 +00:00
e2d6f91d63
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190930 91177308-0d34-0410-b5e6-96231b3b80d8
175 lines
4.7 KiB
LLVM
175 lines
4.7 KiB
LLVM
; Test 32-bit unsigned comparison in which the second operand is a variable.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check register comparison.
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define double @f1(double %a, double %b, i32 %i1, i32 %i2) {
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; CHECK-LABEL: f1:
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; CHECK: clrjl %r2, %r3
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp ult i32 %i1, %i2
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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 low end of the CL range.
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define double @f2(double %a, double %b, i32 %i1, i32 *%ptr) {
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; CHECK-LABEL: f2:
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; CHECK: cl %r2, 0(%r3)
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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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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 high end of the aligned CL range.
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define double @f3(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f3:
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; CHECK: cl %r2, 4092(%r3)
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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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%ptr = getelementptr i32 *%base, i64 1023
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 word up, which should use CLY instead of CL.
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define double @f4(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f4:
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; CHECK: cly %r2, 4096(%r3)
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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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%ptr = getelementptr i32 *%base, i64 1024
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 high end of the aligned CLY range.
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define double @f5(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f5:
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; CHECK: cly %r2, 524284(%r3)
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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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%ptr = getelementptr i32 *%base, i64 131071
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 word up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define double @f6(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f6:
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; CHECK: agfi %r3, 524288
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; CHECK: cl %r2, 0(%r3)
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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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%ptr = getelementptr i32 *%base, i64 131072
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 high end of the negative aligned CLY range.
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define double @f7(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f7:
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; CHECK: cly %r2, -4(%r3)
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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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%ptr = getelementptr i32 *%base, i64 -1
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 low end of the CLY range.
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define double @f8(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f8:
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; CHECK: cly %r2, -524288(%r3)
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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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%ptr = getelementptr i32 *%base, i64 -131072
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 word down, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define double @f9(double %a, double %b, i32 %i1, i32 *%base) {
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; CHECK-LABEL: f9:
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; CHECK: agfi %r3, -524292
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; CHECK: cl %r2, 0(%r3)
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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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%ptr = getelementptr i32 *%base, i64 -131073
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 that CL allows an index.
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define double @f10(double %a, double %b, i32 %i1, i64 %base, i64 %index) {
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; CHECK-LABEL: f10:
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; CHECK: cl %r2, 4092({{%r4,%r3|%r3,%r4}})
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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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%add1 = add i64 %base, %index
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%add2 = add i64 %add1, 4092
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%ptr = inttoptr i64 %add2 to i32 *
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 that CLY allows an index.
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define double @f11(double %a, double %b, i32 %i1, i64 %base, i64 %index) {
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; CHECK-LABEL: f11:
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; CHECK: cly %r2, 4096({{%r4,%r3|%r3,%r4}})
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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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%add1 = add i64 %base, %index
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%add2 = add i64 %add1, 4096
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%ptr = inttoptr i64 %add2 to i32 *
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%i2 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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 comparison can be reversed if that allows CL to be used.
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define double @f12(double %a, double %b, i32 %i2, i32 *%ptr) {
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; CHECK-LABEL: f12:
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; CHECK: cl %r2, 0(%r3)
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; CHECK-NEXT: jh {{\.L.*}}
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%i1 = load i32 *%ptr
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%cond = icmp ult i32 %i1, %i2
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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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