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134 lines
3.5 KiB
LLVM
134 lines
3.5 KiB
LLVM
; Test 32-bit inequality comparisons that are really between a memory halfword
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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 the low end of the 16-bit unsigned range, with zero extension.
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define double @f1(double %a, double %b, i16 *%ptr) {
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; CHECK: f1:
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; CHECK: clhhsi 0(%r2), 0
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; CHECK-NEXT: jlh
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = zext i16 %val to i32
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%cond = icmp ne 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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; Check the high end of the 16-bit unsigned range, with zero extension.
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define double @f2(double %a, double %b, i16 *%ptr) {
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; CHECK: f2:
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; CHECK: clhhsi 0(%r2), 65535
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; CHECK-NEXT: jlh
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = zext i16 %val to i32
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%cond = icmp ne i32 %ext, 65535
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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, with zero extension. The condition is always false.
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define double @f3(double %a, double %b, i16 *%ptr) {
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; CHECK: f3:
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; CHECK-NOT: clhhsi
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = zext i16 %val to i32
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%cond = icmp ne i32 %ext, 65536
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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 comparisons with -1, with zero extension.
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; This condition is also always false.
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define double @f4(double %a, double %b, i16 *%ptr) {
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; CHECK: f4:
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; CHECK-NOT: clhhsi
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = zext i16 %val to i32
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%cond = icmp ne 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 comparisons with 0, using sign extension.
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define double @f5(double %a, double %b, i16 *%ptr) {
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; CHECK: f5:
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; CHECK: clhhsi 0(%r2), 0
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; CHECK-NEXT: jlh
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = sext i16 %val to i32
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%cond = icmp ne 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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; Check the high end of the signed 16-bit range, using sign extension.
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define double @f6(double %a, double %b, i16 *%ptr) {
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; CHECK: f6:
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; CHECK: clhhsi 0(%r2), 32767
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; CHECK-NEXT: jlh
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = sext i16 %val to i32
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%cond = icmp ne i32 %ext, 32767
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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, using sign extension.
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; The condition is always false.
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define double @f7(double %a, double %b, i16 *%ptr) {
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; CHECK: f7:
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; CHECK-NOT: clhhsi
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = sext i16 %val to i32
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%cond = icmp ne i32 %ext, 32768
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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 comparisons with -1, using sign extension.
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define double @f8(double %a, double %b, i16 *%ptr) {
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; CHECK: f8:
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; CHECK: clhhsi 0(%r2), 65535
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; CHECK-NEXT: jlh
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = sext i16 %val to i32
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%cond = icmp ne 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 the low end of the signed 16-bit range, using sign extension.
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define double @f9(double %a, double %b, i16 *%ptr) {
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; CHECK: f9:
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; CHECK: clhhsi 0(%r2), 32768
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; CHECK-NEXT: jlh
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = sext i16 %val to i32
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%cond = icmp ne i32 %ext, -32768
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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 down, using sign extension.
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; The condition is always false.
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define double @f10(double %a, double %b, i16 *%ptr) {
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; CHECK: f10:
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; CHECK-NOT: clhhsi
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; CHECK: br %r14
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%val = load i16 *%ptr
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%ext = sext i16 %val to i32
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%cond = icmp ne i32 %ext, -32769
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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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