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1; RUN: llc -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s --check-prefixes CHECK,CHECK-SDAG2; RUN: llc -global-isel -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s --check-prefixes CHECK,CHECK-GISEL3%big = type i324 5@var = dso_local global %big 06 7; AAPCS: low 8 bits of %in (== w0) will be either 0 or 1. Need to extend to8; 32-bits.9define dso_local void @consume_i1_arg(i1 %in) {10; CHECK-LABEL: consume_i1_arg:11; CHECK: and [[BOOL32:w[0-9]+]], w0, #{{0x1|0xff}}12; CHECK: str [[BOOL32]], [{{x[0-9]+}}, :lo12:var]13 %val = zext i1 %in to %big14 store %big %val, ptr @var15 ret void16}17 18; AAPCS: low 8 bits of %val1 (== w0) will be either 0 or 1. Need to extend to19; 32-bits (doesn't really matter if it's from 1 or 8 bits).20define dso_local void @consume_i1_ret() {21; CHECK-LABEL: consume_i1_ret:22; CHECK: bl produce_i1_ret23; CHECK: and [[BOOL32:w[0-9]+]], w0, #{{0x1|0xff}}24; CHECK: str [[BOOL32]], [{{x[0-9]+}}, :lo12:var]25 %val1 = call i1 @produce_i1_ret()26 %val = zext i1 %val1 to %big27 store %big %val, ptr @var28 ret void29}30 31; AAPCS: low 8 bits of w0 must be either 0 or 1. Need to mask them off.32define dso_local i1 @produce_i1_ret() {33; CHECK-LABEL: produce_i1_ret:34; CHECK: ldr [[VAR32:w[0-9]+]], [{{x[0-9]+}}, :lo12:var]35; CHECK: and w0, [[VAR32]], #{{0x1|0xff}}36 %val = load %big, ptr @var37 %val1 = trunc %big %val to i138 ret i1 %val139}40 41define dso_local void @produce_i1_arg() {42; CHECK-LABEL: produce_i1_arg:43; CHECK: ldr [[VAR32:w[0-9]+]], [{{x[0-9]+}}, :lo12:var]44; CHECK: and w0, [[VAR32]], #{{0x1|0xff}}45; CHECK: bl consume_i1_arg46 %val = load %big, ptr @var47 %val1 = trunc %big %val to i148 call void @consume_i1_arg(i1 %val1)49 ret void50}51 52 53define dso_local void @forward_i1_arg1(i1 %in) {54; CHECK-LABEL: forward_i1_arg1:55; CHECK-NOT: and56; CHECK: bl consume_i1_arg57 call void @consume_i1_arg(i1 %in)58 ret void59}60 61define dso_local void @forward_i1_arg2(i1 %in, i1 %cond) {62; CHECK-LABEL: forward_i1_arg2:63;64; The optimization in SelectionDAG currently fails to recognize that65; %in is already zero-extended to i8 if the call is not in the entry66; block.67;68; CHECK-SDAG: and69; CHECK-GISEL-NOT: and70;71; CHECK: bl consume_i1_arg72 br i1 %cond, label %true, label %false73true:74 call void @consume_i1_arg(i1 %in)75 ret void76 77false:78 ret void79}80 81;define zeroext i1 @foo(i8 %in) {82; %val = trunc i8 %in to i183; ret i1 %val84;}85