a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
221 lines
6.1 KiB
LLVM
221 lines
6.1 KiB
LLVM
; Test 32-bit ordered comparisons that are really between a memory byte
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; and a constant.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check unsigned comparison near the low end of the CLI range, using zero
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; extension.
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define double @f1(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f1:
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; CHECK: cli 0(%r2), 1
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; CHECK-NEXT: bhr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i32
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%cond = icmp ugt i32 %ext, 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 unsigned comparison near the low end of the CLI range, using sign
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; extension.
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define double @f2(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f2:
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; CHECK: cli 0(%r2), 1
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; CHECK-NEXT: bhr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp ugt i32 %ext, 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 unsigned comparison near the high end of the CLI range, using zero
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; extension.
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define double @f3(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f3:
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; CHECK: cli 0(%r2), 254
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; CHECK-NEXT: blr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i32
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%cond = icmp ult i32 %ext, 254
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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 unsigned comparison near the high end of the CLI range, using sign
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; extension.
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define double @f4(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f4:
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; CHECK: cli 0(%r2), 254
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; CHECK-NEXT: blr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp ult i32 %ext, -2
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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 unsigned comparison above the high end of the CLI range, using zero
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; extension. The condition is always true.
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define double @f5(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f5:
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; CHECK-NOT: cli {{.*}}
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i32
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%cond = icmp ult i32 %ext, 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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; When using unsigned comparison with sign extension, equality with values
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; in the range [128, MAX-129] is impossible, and ordered comparisons with
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; those values are effectively sign tests. Since such comparisons are
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; unlikely to occur in practice, we don't bother optimizing the second case,
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; and simply ignore CLI for this range. First check the low end of the range.
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define double @f6(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f6:
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; CHECK-NOT: cli {{.*}}
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp ult i32 %ext, 128
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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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; ...and then the high end.
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define double @f7(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f7:
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; CHECK-NOT: cli {{.*}}
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp ult i32 %ext, -129
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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 signed comparison near the low end of the CLI range, using zero
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; extension. This is equivalent to unsigned comparison.
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define double @f8(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f8:
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; CHECK: cli 0(%r2), 1
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; CHECK-NEXT: bhr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i32
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%cond = icmp sgt i32 %ext, 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 signed comparison near the low end of the CLI range, using sign
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; extension. This cannot use CLI.
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define double @f9(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f9:
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; CHECK-NOT: cli {{.*}}
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp sgt i32 %ext, 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 signed comparison near the high end of the CLI range, using zero
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; extension. This is equivalent to unsigned comparison.
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define double @f10(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f10:
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; CHECK: cli 0(%r2), 254
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; CHECK-NEXT: blr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i32
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%cond = icmp slt i32 %ext, 254
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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 signed comparison near the high end of the CLI range, using sign
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; extension. This cannot use CLI.
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define double @f11(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f11:
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; CHECK-NOT: cli {{.*}}
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp slt i32 %ext, -2
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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 signed comparison above the high end of the CLI range, using zero
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; extension. The condition is always true.
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define double @f12(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f12:
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; CHECK-NOT: cli {{.*}}
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = zext i8 %val to i32
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%cond = icmp slt i32 %ext, 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 tests for nonnegative values.
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define double @f13(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f13:
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; CHECK: cli 0(%r2), 128
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; CHECK-NEXT: blr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp sge i32 %ext, 0
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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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; ...and another form
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define double @f14(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f14:
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; CHECK: cli 0(%r2), 128
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; CHECK-NEXT: blr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp sgt i32 %ext, -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 tests for negative values.
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define double @f15(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f15:
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; CHECK: cli 0(%r2), 127
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; CHECK-NEXT: bhr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp slt i32 %ext, 0
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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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; ...and another form
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define double @f16(double %a, double %b, ptr %ptr) {
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; CHECK-LABEL: f16:
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; CHECK: cli 0(%r2), 127
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; CHECK-NEXT: bhr %r14
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; CHECK: br %r14
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%val = load i8, ptr %ptr
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%ext = sext i8 %val to i32
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%cond = icmp sle i32 %ext, -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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