; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s ; Check comparisons with zero. If the tested value is live after the ; comparison, load and test cannot be used to the same register. ; Compared value is used afterwards. define i64 @f1(i64 %a, i64 %b, float %V, ptr %dst) { ; CHECK-LABEL: f1: ; CHECK: ltebr %f1, %f0 %cond = fcmp oeq float %V, 0.0 %res = select i1 %cond, i64 %a, i64 %b store volatile float %V, ptr %dst ret i64 %res } define i64 @f1m(i64 %a, i64 %b, float %V, ptr %dst) { ; CHECK-LABEL: f1m: ; CHECK: ltebr %f1, %f0 %cond = fcmp oeq float %V, -0.0 %res = select i1 %cond, i64 %a, i64 %b store volatile float %V, ptr %dst ret i64 %res } ; Value only used in comparison. define i64 @f2(i64 %a, i64 %b, float %V) { ; CHECK-LABEL: f2: ; CHECK: ltebr %f0, %f0 %cond = fcmp oeq float %V, 0.0 %res = select i1 %cond, i64 %a, i64 %b ret i64 %res } define i64 @f2m(i64 %a, i64 %b, float %V) { ; CHECK-LABEL: f2m: ; CHECK: ltebr %f0, %f0 %cond = fcmp oeq float %V, -0.0 %res = select i1 %cond, i64 %a, i64 %b ret i64 %res } ; Same for double define i64 @f3(i64 %a, i64 %b, double %V, ptr %dst) { ; CHECK-LABEL: f3: ; CHECK: ltdbr %f1, %f0 %cond = fcmp oeq double %V, 0.0 %res = select i1 %cond, i64 %a, i64 %b store volatile double %V, ptr %dst ret i64 %res } define i64 @f3m(i64 %a, i64 %b, double %V, ptr %dst) { ; CHECK-LABEL: f3m: ; CHECK: ltdbr %f1, %f0 %cond = fcmp oeq double %V, -0.0 %res = select i1 %cond, i64 %a, i64 %b store volatile double %V, ptr %dst ret i64 %res } define i64 @f4(i64 %a, i64 %b, double %V) { ; CHECK-LABEL: f4: ; CHECK: ltdbr %f0, %f0 %cond = fcmp oeq double %V, 0.0 %res = select i1 %cond, i64 %a, i64 %b ret i64 %res } define i64 @f4m(i64 %a, i64 %b, double %V) { ; CHECK-LABEL: f4m: ; CHECK: ltdbr %f0, %f0 %cond = fcmp oeq double %V, -0.0 %res = select i1 %cond, i64 %a, i64 %b ret i64 %res } ; Same for fp128 define i64 @f5(i64 %a, i64 %b, fp128 %V, ptr %dst) { ; CHECK-LABEL: f5: ; CHECK: ltxbr %f1, %f0 %cond = fcmp oeq fp128 %V, 0xL00000000000000008000000000000000 %res = select i1 %cond, i64 %a, i64 %b store volatile fp128 %V, ptr %dst ret i64 %res } define i64 @f6(i64 %a, i64 %b, fp128 %V) { ; CHECK-LABEL: f6: ; CHECK: ltxbr %f0, %f0 %cond = fcmp oeq fp128 %V, 0xL00000000000000008000000000000000 %res = select i1 %cond, i64 %a, i64 %b ret i64 %res }