derek.holloway
7502bf64a4
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72 lines
1.4 KiB
LLVM
72 lines
1.4 KiB
LLVM
; Test insertions of 16-bit constants into one half of an i32.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check the lowest useful IILL value. (We use NILL rather than IILL
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; to clear 16 bits.)
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define i32 @f1(i32 %a) {
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; CHECK-LABEL: f1:
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; CHECK-NOT: ni
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; CHECK: iill %r2, 1
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; CHECK: br %r14
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%and = and i32 %a, 4294901760
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%or = or i32 %and, 1
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ret i32 %or
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}
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; Check a middle value.
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define i32 @f2(i32 %a) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: ni
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; CHECK: iill %r2, 32769
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; CHECK: br %r14
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%and = and i32 %a, -65536
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%or = or i32 %and, 32769
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ret i32 %or
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}
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; Check the highest useful IILL value. (We use OILL rather than IILL
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; to set 16 bits.)
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define i32 @f3(i32 %a) {
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; CHECK-LABEL: f3:
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; CHECK-NOT: ni
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; CHECK: iill %r2, 65534
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; CHECK: br %r14
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%and = and i32 %a, 4294901760
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%or = or i32 %and, 65534
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ret i32 %or
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}
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; Check the lowest useful IILH value.
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define i32 @f4(i32 %a) {
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; CHECK-LABEL: f4:
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; CHECK-NOT: ni
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; CHECK: iilh %r2, 1
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; CHECK: br %r14
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%and = and i32 %a, 65535
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%or = or i32 %and, 65536
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ret i32 %or
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}
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; Check a middle value.
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define i32 @f5(i32 %a) {
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; CHECK-LABEL: f5:
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; CHECK-NOT: ni
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; CHECK: iilh %r2, 32767
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; CHECK: br %r14
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%and = and i32 %a, 65535
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%or = or i32 %and, 2147418112
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ret i32 %or
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}
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; Check the highest useful IILH value.
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define i32 @f6(i32 %a) {
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; CHECK-LABEL: f6:
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; CHECK-NOT: ni
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; CHECK: iilh %r2, 65534
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; CHECK: br %r14
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%and = and i32 %a, 65535
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%or = or i32 %and, -131072
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ret i32 %or
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}
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