mirror of
https://github.com/c64scene-ar/llvm-6502.git
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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
214 lines
5.6 KiB
LLVM
214 lines
5.6 KiB
LLVM
; Test f32 conditional stores that are presented as selects.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare void @foo(float *)
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; Test with the loaded value first.
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define void @f1(float *%ptr, float %alt, i32 %limit) {
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; CHECK-LABEL: f1:
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; CHECK-NOT: %r2
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: ste %f0, 0(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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}
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; ...and with the loaded value second
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define void @f2(float *%ptr, float %alt, i32 %limit) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: %r2
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; CHECK: jhe [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: ste %f0, 0(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %alt, float %orig
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store float %res, float *%ptr
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ret void
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}
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; Check the high end of the aligned STE range.
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define void @f3(float *%base, float %alt, i32 %limit) {
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; CHECK-LABEL: f3:
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; CHECK-NOT: %r2
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: ste %f0, 4092(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 1023
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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}
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; Check the next word up, which should use STEY instead of STE.
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define void @f4(float *%base, float %alt, i32 %limit) {
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; CHECK-LABEL: f4:
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; CHECK-NOT: %r2
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: stey %f0, 4096(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 1024
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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}
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; Check the high end of the aligned STEY range.
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define void @f5(float *%base, float %alt, i32 %limit) {
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; CHECK-LABEL: f5:
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; CHECK-NOT: %r2
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: stey %f0, 524284(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 131071
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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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 void @f6(float *%base, float %alt, i32 %limit) {
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; CHECK-LABEL: f6:
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; CHECK-NOT: %r2
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: agfi %r2, 524288
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; CHECK: ste %f0, 0(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 131072
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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}
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; Check the low end of the STEY range.
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define void @f7(float *%base, float %alt, i32 %limit) {
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; CHECK-LABEL: f7:
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; CHECK-NOT: %r2
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: stey %f0, -524288(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 -131072
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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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 void @f8(float *%base, float %alt, i32 %limit) {
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; CHECK-LABEL: f8:
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; CHECK-NOT: %r2
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: agfi %r2, -524292
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; CHECK: ste %f0, 0(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 -131073
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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}
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; Check that STEY allows an index.
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define void @f9(i64 %base, i64 %index, float %alt, i32 %limit) {
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; CHECK-LABEL: f9:
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; CHECK-NOT: %r2
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r2
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; CHECK: stey %f0, 4096(%r3,%r2)
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; CHECK: [[LABEL]]:
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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 float *
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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}
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; Check that volatile loads are not matched.
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define void @f10(float *%ptr, float %alt, i32 %limit) {
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; CHECK-LABEL: f10:
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; CHECK: le {{%f[0-5]}}, 0(%r2)
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; CHECK: {{jl|jnl}} [[LABEL:[^ ]*]]
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; CHECK: [[LABEL]]:
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; CHECK: ste {{%f[0-5]}}, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 420
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%orig = load volatile float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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ret void
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}
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; ...likewise stores. In this case we should have a conditional load into %f0.
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define void @f11(float *%ptr, float %alt, i32 %limit) {
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; CHECK-LABEL: f11:
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; CHECK: jhe [[LABEL:[^ ]*]]
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; CHECK: le %f0, 0(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: ste %f0, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store volatile float %res, float *%ptr
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ret void
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}
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; Try a frame index base.
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define void @f12(float %alt, i32 %limit) {
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; CHECK-LABEL: f12:
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; CHECK: brasl %r14, foo@PLT
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; CHECK-NOT: %r15
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r15
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; CHECK: ste {{%f[0-9]+}}, {{[0-9]+}}(%r15)
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; CHECK: [[LABEL]]:
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; CHECK: brasl %r14, foo@PLT
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; CHECK: br %r14
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%ptr = alloca float
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call void @foo(float *%ptr)
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%cond = icmp ult i32 %limit, 420
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%orig = load float *%ptr
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%res = select i1 %cond, float %orig, float %alt
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store float %res, float *%ptr
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call void @foo(float *%ptr)
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ret void
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}
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