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80d5f68422
Return is now considered a predicable instruction, and is converted to a newly-added CondReturn (which maps to BCR to %r14) instruction by the if conversion pass. Also, fused compare-and-branch transform knows about conditional returns, emitting the proper fused instructions for them. This transform triggers on a *lot* of tests, hence the huge diffstat. The changes are mostly jX to br %r14 -> bXr %r14. Author: koriakin Differential Revision: http://reviews.llvm.org/D17339 llvm-svn: 265689
242 lines
6.1 KiB
LLVM
242 lines
6.1 KiB
LLVM
; Test 32-bit signed comparison 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 comparisons with 0.
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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: cijl %r2, 0
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i32 %i1, 0
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check comparisons with 2.
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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: cijl %r2, 2
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i32 %i1, 2
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the high end of the CIJ range.
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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: cijl %r2, 127
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i32 %i1, 127
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the next value up, which must use CHI instead.
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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: chi %r2, 128
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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 slt i32 %i1, 128
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the high end of the CHI range.
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define double @f5(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f5:
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; CHECK: chi %r2, 32767
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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 slt i32 %i1, 32767
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the next value up, which must use CFI.
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define double @f6(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f6:
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; CHECK: cfi %r2, 32768
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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 slt i32 %i1, 32768
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the high end of the signed 32-bit range.
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define double @f7(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f7:
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; CHECK: cfi %r2, 2147483647
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp eq i32 %i1, 2147483647
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the next value up, which should be treated as a negative value.
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define double @f8(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f8:
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; CHECK: cfi %r2, -2147483648
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp eq i32 %i1, 2147483648
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the high end of the negative CIJ range.
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define double @f9(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f9:
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; CHECK: cijl %r2, -1
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i32 %i1, -1
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the low end of the CIJ range.
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define double @f10(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f10:
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; CHECK: cijl %r2, -128
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i32 %i1, -128
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the next value down, which must use CHI instead.
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define double @f11(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f11:
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; CHECK: chi %r2, -129
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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 slt i32 %i1, -129
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the low end of the CHI range.
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define double @f12(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f12:
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; CHECK: chi %r2, -32768
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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 slt i32 %i1, -32768
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the next value down, which must use CFI instead.
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define double @f13(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f13:
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; CHECK: cfi %r2, -32769
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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 slt i32 %i1, -32769
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the low end of the signed 32-bit range.
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define double @f14(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f14:
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; CHECK: cfi %r2, -2147483648
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp eq i32 %i1, -2147483648
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check the next value down, which should be treated as a positive value.
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define double @f15(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f15:
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; CHECK: cfi %r2, 2147483647
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; CHECK-NEXT: je
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp eq i32 %i1, -2147483649
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check that < 1 becomes <= 0.
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define double @f16(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f16:
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; CHECK: cijle %r2, 0
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp slt i32 %i1, 1
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check that >= 1 becomes > 0.
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define double @f17(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f17:
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; CHECK: cijh %r2, 0
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp sge i32 %i1, 1
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check that > -1 becomes >= 0.
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define double @f18(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f18:
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; CHECK: cijhe %r2, 0
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp sgt i32 %i1, -1
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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; Check that <= -1 becomes < 0.
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define double @f19(double %a, double %b, i32 %i1) {
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; CHECK-LABEL: f19:
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; CHECK: cijl %r2, 0
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; CHECK: ldr %f0, %f2
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; CHECK: br %r14
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%cond = icmp sle i32 %i1, -1
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%tmp = select i1 %cond, double %a, double %b
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%res = fadd double %tmp, 1.0
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ret double %res
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}
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